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Shiraoi (Hokkaido) (JP)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Cloudy
3°C
Cloudy
Humidity
77.3%
Wind
2 m/s
Pressure
1020.4 hPa
Direction
19°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
2° / 6°
Precip.
7.8mm
Max wind
4.6 m/s

Hourly Forecast

27.02
Now
Weather
27.02
07:00
Weather
27.02
08:00
Weather
27.02
09:00
Weather
27.02
10:00
Weather
0.3
27.02
11:00
Weather
0.7
27.02
12:00
Weather
1.3
27.02
13:00
Weather
0.9
27.02
14:00
Weather
0.8
27.02
15:00
Weather
0.4
27.02
16:00
Weather
0.4
27.02
17:00
Weather
0.8
27.02
18:00
Weather
0.9
27.02
19:00
Weather
0.7
27.02
20:00
Weather
0.4
27.02
21:00
Weather
0.2
27.02
22:00
Weather
27.02
23:00
Weather
28.02
00:00
Weather
28.02
01:00
Weather
28.02
02:00
Weather
28.02
03:00
Weather
28.02
04:00
Weather
28.02
05:00
Weather

Temperature

6°C
2°C
06:00
3°C
07:00
3°C
08:00
3°C
09:00
2°C
10:00
2°C
11:00
2°C
12:00
2°C
13:00
2°C
14:00
2°C
15:00
2°C
16:00
2°C
17:00
2°C
18:00
2°C
19:00
3°C
20:00
2°C
21:00
3°C
22:00
2°C
23:00
3°C
00:00
3°C
01:00
4°C
02:00
4°C
03:00
6°C
04:00
5°C
05:00
5°C
06:00 17:00 05:00

Precipitation

1.3mm
0mm
10:00
0.3mm
11:00
0.7mm
12:00
1.3mm
13:00
0.9mm
14:00
0.8mm
15:00
0.4mm
16:00
0.4mm
17:00
0.8mm
18:00
0.9mm
19:00
0.7mm
20:00
0.4mm
21:00
0.2mm
06:00 17:00 05:00

Wind

4.6m/s
0m/s
06:00
1.7 m/s
07:00
1.5 m/s
08:00
1.6 m/s
09:00
1.9 m/s
10:00
1.4 m/s
11:00
1.5 m/s
12:00
1.5 m/s
13:00
2.5 m/s
14:00
3.2 m/s
15:00
3.4 m/s
16:00
3.7 m/s
17:00
4 m/s
18:00
3.9 m/s
19:00
4 m/s
20:00
4.6 m/s
21:00
3.1 m/s
22:00
2.3 m/s
23:00
2.1 m/s
00:00
2.2 m/s
01:00
1.7 m/s
02:00
1.9 m/s
03:00
2.5 m/s
04:00
4 m/s
05:00
3.7 m/s
06:00 17:00 05:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
57 km
97
32.3%

Measurement time: 2026-02-27 06:00

Calculated from PM2.5/PM10

PM2.5
57 km
34 µg/m3
40.5%

Measurement time: 2026-02-27 06:00

source: Aqicn

O3
57 km
22.4 µg/m3
14%

Measurement time: 2026-02-27 06:00

source: Aqicn

NO2
57 km
19.5 µg/m3
9.8%

Measurement time: 2026-02-27 06:00

source: Aqicn

PM10
57 km
11 µg/m3
7.9%

Measurement time: 2026-02-27 06:00

source: Aqicn

CO
57 km
0.0023 mg/m3
0%

Measurement time: 2026-02-27 06:00

source: Aqicn

Info


Country: Japan
Region: Hokkaido
Latitude: 42.55
Longitude: 141.35

Cities in the area:


Solar Energy

Very low
50.9 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Shiraoi

About Air Quality in Shiraoi

Air quality in Shiraoi is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Shiraoi

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Shiraoi?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Shiraoi

If you're planning outdoor activities in Shiraoi, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.